Tube for inclosing liquids or viscous substances.



JULES rnnvnr, `or Paars, FRANCE.

TUBE FOR INCLOSING LIQUIDS OR VISCOUS SUBSTATCES.

specincatin of Letters Patent.

Patented apr. i5', raie.

Application led January 20, 1915. Serial No. 3,290.

To all 'whom t may concer/n Be it known that I, JULES Pnnvnr, of 4:8 Rue des Petites-Ecuries, Paris,'France, merchant, have invented new and useful Improvements in and Relating to Tubes for Inclosing Liquids or Viscous Substances, which improvements are fully set forth in the following specification.

Up to the present time vials or glass tubes have been employed most generally for inclosing and transporting liquid substances of all kinds and more especially pharmaceutical products, antiseptics and the like, which country doctors, travelers, engineers, etc., carry with thenr to the Colonies for example; these vials or glass tubes, however, have the disadvantage that they are very fragile.

Attempts have been made to use for this purpose tubesmade of tin or some suitable well-known composition for inclosing substances such as pastes, paints, secotine, vaseline, pomade. These tubes, as is well known, after being lled are closed at the end by a multiple fold, firmly squeezed in a machine. The processes hitherto employed, however, for closing tubes by folding have not succeeded in rendering them absolutely liquidtight, which has practically prevented their use for inclosing liquid substances.

According to this invention the system employed in corking bottles by means of plugs or Stoppers of cork or other suitable material is applied to these tubes. An absolutely hermetic stoppering is thereby easily obtained. To effect this a hand or automatic machine of any suitable type can be used. It is only necessary, as the metal tube does not of itself possess suiiicient rigidity, to support it. during the operation of corking by a ring, of metal for example, embracing the outer circumference of the tube. The stopper, compressed `in the funnel of the corking machine, is driven directly into the end of the -tube where it swells or expands and tends to come back to its original size, thus exerting a strong pressure against the sides of the tube by reason of its radial compression. The end of the tube is thenv preferably capped by a rigid capsule, of any suitable material, which assists in retaining the end of the tube against any tendency to undue expansion under the pressure of the compressed cork. i

In the accompanying drawings in which one way of carrying out the Invention is shown, Figure l is an elevation of the tube, with its different parts separated, Fig. 2

1s a rsimilar view showing the tube closed, Fig 3 1s an elevation partly in section of the end of the closed tube, and Fig. 4 is a dlagraimnatic view showing one way of corklng the tube.

a 1s the tube made of tin or other suitable composition and of the ordinary shape, b the stopper made of cork for example and c the capsule, covering the stopper, on the end of the tube.

In order to effect the corking (Fig. 4c) the filled tube a is passed through a ring d, which is supported in any suitable manner, until the end of the tube comes against a suitable stop c which preferably has a hollow to receive it. Care must be taken to leave the upper end al of the tube projecting slightly above the supporting ring d. Before corking, one should make certain that the tube a is perfectly cylindrical by inserting a slightly tapered gage which will open out the projecting edge a1 of the tube.

The corking machine A of any suitable type is then brought over the support a3. In operating this machine in the ordinary manner the stopper Z) is compressed in the funnel C of the machine and driven out by the aid of the piston B; the stopper passes into the tube a where it expands and exerts a strong pressure against its walls.

It must be understood that the arrangement for supporting the tube a while it is being corked may be given any other suitable form or arrangement, the principle of the invention residing solely in the application to these known tubes of tin or composition of the method of corking bottles.

When the corking has been effected, the projecting edge al of the tube a is turned in (Fig. 3) in such a way as to prevent the stopper from sliding out in case of internal pressure due to the great volatility of the liquid. The stopper is then covered with suitable capsule c, which adds to thel effectiveness of the corking, and resists undue expansion of the end of the tube under the pressure of the compressed cork.

Claims: v Y

l. The method of closing the end of a collapsible tube consisting in compressing a resilient stopper to reduce its diameter to that of the end of said tube, inserting said stopper within the end of said tube while restraining the end walls of the tube from radial expansion, upsetting the rini of the tube over said stopper, and applying over said end a rigid capsule adapted to receiver and hold the radiallyexpanding Wall against the full expansion of said'stoppei to forni a tight joint. Y

2. A collapsible tube having a resilient end closure undei` radial compression, the- 1im of the tube being intuined to retain the 10 stopper from endwise movement, and a rigid specification in the presence' of two subsorib- 15 ing Witnesses.

JULES PREVET. Witnesses;

DE WITT C. POOLE, Jr., GASTON DE MESTRAL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patentsz Washington, ID. C. 

